On 02/21/2014 07:04 AM, Fleep Tuque wrote:
I don't have nearly as much experience or expertise with optimizing
OpenSim as some of the folks who have already posted, but we did a
fair bit of performance testing at UC trying to decide which approach
was better, and in my experience the virtual machine route just didn't
perform as well as running on physical hardware.
For something like a personal sandbox, or a small community grid where
you don't expect much concurrency, it probably would work just fine.
For a full on grid hosting many projects or people, I personally
wouldn't go with a vm route.
- Chris
There is no reason why OpenSim on a correctly configured VM given enough
resources shouldn;t perform as well as a physical machine. Dahlia
mentioned timer accuracy and that could be an issue but even then on any
recent hardware the differences should be minimal.
If you are trying to use Linux I'd recommend the Mono 3.x codebase. I'm
finding its performance is significantly better. That probably requires
building by yourself although there is a ppa available for Ubuntu.
Mike
Chris M. Collins (Avatar: Fleep Tuque)
Center for Simulations & Virtual Environments Research (UCSIM)
UCIT Research & Development, Innovation & Partnerships
UC Office of Information Technologies
University of Cincinnati
400 University Hall
PO Box 210658
Cincinnati, OH 45221-0658
[email protected] <mailto:[email protected]>
(513) 556-3018
http://ucsim.uc.edu
On Fri, Feb 21, 2014 at 6:56 AM, R.Gunther <[email protected]
<mailto:[email protected]>> wrote:
Only tried opensim in virtualbox (on windows :O ) with opensuse as
guest.
But the biggest problem i see is the hdd speed. maby not enough
cpu resources. assigned 2-3 cores.
But it where a bit more laggy. but linux is not the best choice
for opensim anyway, so it maby could be mono to.
On 2014-02-21 07:37, John Sheridan wrote:
If you're looking to run your own hypervisor I'd suggest
something called Proxmox. Its open source / linux based and
allows you to create both openvz and kvm containers via a nifty
web interface. Their website is https://pve.proxmox.com
On 02/21/2014 12:24 AM, Dahlia Trimble wrote:
I've used OpenSimulator in a variety of virtual machines, from
KVM to OpenVZ to VirtualBox to EC2. In general performance is
less than when running in bare hardware but everything usually
works. I've seen some issues with timer accuracy in some virtual
machines in the past and had to compile a custom linux kernel to
get around it, but I think recent virtualization technology has
probably fixed this. Some technologies like OpenVZ I found very
difficult to work with in general and I prefer to stick with the
KVM style approach where the host OS kernel is set up to allow a
"closer to the metal" virtualization.
I think virtual machines are good for lower performance
installations where fewer avatars and scripts are expected. and
bare metal should be used where higher performance is needed.
Often hosting companies will oversell and you may get a lot less
performance than you would expect from their advertised
specifications. If performance is poor with one company, try
others. The cheapest deal is usually far from the best.
On Thu, Feb 20, 2014 at 2:48 PM, Justin Clark-Casey
<[email protected] <mailto:[email protected]>> wrote:
I've seen OpenSimulator run under different virtual machines
(Xen and EC2). Back a few years ago, there was a very odd
issue when using EC2 where the simulator process wouldn't
certain start context switching millions of times and freeze
out all other processes, though that may have been a mono
issue rather than EC2.
Other than that, it appears to work just fine as long as you
give it sufficient CPU resources, as is the case when
running on bare metal.
On 20/02/14 21:19, [email protected]
<mailto:[email protected]> wrote:
Hi all
I wad wondering if anyone had much experience with
running OpenSim under a
virtual machine? I'm interested in finding out what sort
of performance
can be expected from running in that sort of environment
and how far it
can be pushed without too many issues.
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OSVW Consulting
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